Doom3 wasn't really very scary. The only good part was when that guy is hanging from the ceiling & starts screaming. That was very creepy.

The reason it isn't scary is because it resorts to cheap thrills that get old fast. It's almost always dark. The triggered creatures...

Doom2 was fun because it was hell overflowing. When you saw an archvile, you were terrified because you knew that no matter what you did, you were going to have to fight more creatures. The archvile was intelligent & would teleport to the back of the horde. He wouldn't teleport with a mere few creatures but with at least a dozen. I remember seeing two archviles, 3 hellknights, 10 imps, undead all over the place, and cacodemons flying around all at once!!

The other thing that was scary in Doom2 was the corpses on pikes, the satanic references, candles burning, bodies twitching, legs and arms dismembered from torsos, walls bleeding, and Doom2 was far more frightning than Doom3 simply based on that. The only crossover was a twitching torso, that's it. Oh, the walls were made flesh, which was pretty well done, but it still lacked.

The problem is that ID employees got old. A teenager doesn't have any problem thinking about Satan, dressing up evil on a daily basis, and surrounding themselves with twisted music, posters, and watching satanic movies. The older people get the more they concern themselves with saving their lives and their souls. ID is unable to make a scary game because they're all old farts. Hell was practically empty and it was tiny. There should be little babies being ripped apart by imp demons and women being raped by the horns of some strange demon or being eaten out by a cacademon. There should be men being dismembered by hell knights and little dogs too, puppies even. Make it disturbing. Make it ultra-violent. Make it say fuck you in the face of religion and peta or it isn't convincing as evil. Doom3 wasn't scary. It was timid and lame and lifeless. Doom2 was very scary. It was about hell. Doom3 was about something else; but it wasn't really hell. Maybe the nicest part of hell where demons are stunted, retarded, but graphically better representations of their former selves.